Divisional Rankings

Divisional Data Info
Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Illinois, Climate Division 8. Southwest

Average Temperature Rankings, August 2018

View Period (Months):
Download: csv json xml
  • Record Coolest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
August 2018
1-Month
76.5°F
(24.7°C)
76.0°F
(24.4°C)
0.5°F
(0.3°C)
79th Coolest
Coolest since:
1915
50th Warmest
Warmest since:
1936
Ties: 1923
Jul–Aug 2018
2-Month
77.4°F
(25.2°C)
77.0°F
(25.0°C)
0.4°F
(0.2°C)
82nd Coolest
Coolest since:
1967
47th Warmest
Warmest since:
1936
Ties: 1919, 1923, 1933, 1998
Jun–Aug 2018
3-Month
77.6°F
(25.3°C)
75.9°F
(24.4°C)
1.7°F
(0.9°C)
103rd Coolest
Coolest since:
1915, 1927
26th Warmest
Warmest since:
1936
Ties: 1987
May–Aug 2018
4-Month
76.5°F
(24.7°C)
73.2°F
(22.9°C)
3.3°F
(1.8°C)
125th Coolest
Coolest since:
1967
4th Warmest
Warmest since:
1936
Ties: 2010
Apr–Aug 2018
5-Month
71.1°F
(21.7°C)
69.6°F
(20.9°C)
1.5°F
(0.8°C)
104th Coolest
Coolest since:
1907
25th Warmest
Warmest since:
2010
Ties: 1921, 1953, 1986, 1998, 2005
Mar–Aug 2018
6-Month
66.6°F
(19.2°C)
65.5°F
(18.6°C)
1.1°F
(0.6°C)
99th Coolest
Coolest since:
1904
30th Warmest
Warmest since:
2012
Ties: 1959, 1964
Feb–Aug 2018
7-Month
62.6°F
(17.0°C)
61.1°F
(16.2°C)
1.5°F
(0.8°C)
105th Coolest
Coolest since:
1904
24th Warmest
Warmest since:
2012
Ties: 1932, 1936, 1999
Jan–Aug 2018
8-Month
58.3°F
(14.6°C)
57.3°F
(14.1°C)
1.0°F
(0.5°C)
94th Coolest
Coolest since:
1912
35th Warmest
Warmest since:
2012
Ties: 1919, 1939, 1941, 2001
Dec 2017–Aug 2018
9-Month
55.7°F
(13.2°C)
54.8°F
(12.7°C)
0.9°F
(0.5°C)
87th Coolest
Coolest since:
1904
41st Warmest
Warmest since:
2012
Ties: 1986, 2011
Nov 2017–Aug 2018
10-Month
54.8°F
(12.7°C)
53.8°F
(12.1°C)
1.0°F
(0.6°C)
94th Coolest
Coolest since:
1904
34th Warmest
Warmest since:
2012
Ties: 1939, 1946, 1949, 1952, 1988
Oct 2017–Aug 2018
11-Month
55.3°F
(12.9°C)
54.1°F
(12.3°C)
1.2°F
(0.6°C)
100th Coolest
Coolest since:
1904
28th Warmest
Warmest since:
2012
Ties: 1938, 1986, 2011
Sep 2017–Aug 2018
12-Month
56.6°F
(13.7°C)
55.3°F
(12.9°C)
1.3°F
(0.8°C)
103rd Coolest
Coolest since:
1904
25th Warmest
Warmest since:
2012
Ties: 1922, 1972
Mar 2017–Aug 2018
18-Month
60.1°F
(15.6°C)
58.7°F
(14.8°C)
1.4°F
(0.8°C)
107th Coolest
Coolest since:
1904
21st Warmest
Warmest since:
2012
Ties: 1991, 2008
Sep 2016–Aug 2018
24-Month
57.7°F
(14.3°C)
55.4°F
(13.0°C)
2.3°F
(1.3°C)
124th Coolest
Coolest since:
1979
3rd Warmest
Warmest since:
2017
Ties: 2000
Sep 2015–Aug 2018
36-Month
58.1°F
(14.5°C)
55.4°F
(13.0°C)
2.7°F
(1.5°C)
125th Coolest
Coolest since:
1979
1st Warmest
Warmest to Date
2018
Sep 2014–Aug 2018
48-Month
57.3°F
(14.1°C)
55.4°F
(13.0°C)
1.9°F
(1.1°C)
123rd Coolest
Coolest since:
1980
2nd Warmest
Warmest to Date
2019
Sep 2013–Aug 2018
60-Month
56.6°F
(13.7°C)
55.3°F
(12.9°C)
1.3°F
(0.8°C)
110th Coolest
Coolest since:
1906
14th Warmest
Warmest since:
2020
Ties: 1956, 1957, 2007

Citing This Page